Automatic gas-pressure regulator



H. BURGL AUTOMATIC GAS PRESSURE REGULATOR.

APPLICATION FILED NOV. 24, I919.

Patented July 13, 1920.

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HERMAN BURGI, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR 01F ONE-HALF T0 CHARLES H. TENNEY, 0F SPRING-FIELD, MASSACHUSETTS.

AUTOMATIC GAS-PRESSUILE REGULATOR.

Patented July 1?, 192th Application filed November 24, 1919. Serial No. 340,428.

To all whom it may concern:

Be it known that l, HERMAN citizen of the United States, and at Springfield, county of ,Hampden, State of Massachusetts, have invented certain new and useful Improvements in Automatic Gas- Pressure Regulators, of which the following is a specification.

This invention relates primarily to means for automatically controlling the passage of gases through a flue, and is particularly adaptedto control the pressure or vacuum. of hot gases in the chimney or arch of a seating in a steel furnace, coke oven, a retort bench, or anything that requires a control of hot gases. It will be observed, however, from the following description of the structure and operation, that many of its novel features are adapted for other uses for controlling the passage of fluids and, therefore my claims are not to be taken as limited to the particular uses of those features stated. It has been found very diflicult 'to provide satisfactory means for automatically regulating the discharge of hot gases through a flue by, and in accordance with, the pressure or vacuum in the chamber from which they come, so as to accurately regulate the pressure or vacuum in the chamber. The flue must be'made or lined with fireproof refractory material, and it is very desirable that the valve or damper itself shall be heat resisting so as to avoid frequent replacements and repairs, but ordinarily to do this would make the structure too cumbersome and hard to work to be practical. Furthermore, even in the forms of dampers and valves which have been found practical, too much power has been required to operate them to make it possible to utilize the direct action of a pressure or vacuum float or other direct pressure or vacuum control,.and it was necessary to make use of an outside source of power which was merely controlled by the pressure mechanism. This, aside from the extra expense introduced other elements likely to cause inaccuracy in result, and was likely to get out of order. My invention is intended to avoid these defects,

Boner, a

and embodies a valve or damper which can residing vice. The novel features will be understood from the following description and claims,

taken. in connection with the drawing. In the drawing:

Figure 1 is a side view of my invention applied to a typical installation of a gas retort;

Fig. 2 is a vertical section through a portion of the outlet flue and the pressure float mechanism showing my invention; and

Fig. 3 is an end View of the valve or damper itself.

In these drawings 10 is the retort chamber of the gas retort, and in which it is desired to maintain a'regulated gas pressure or vacuum. The gases pass out through an outlet line 11, which has a lining 12- of fireproof material. Extending from one side of the flue 11 there is a valve chamber 13, which is also lined with fireproof refractory material 14. As shown, the bottom wall 15 of this valve chamber is fiat and horizontal, extending at right angles from flue 11, and the top wall 16 is similarly shaped. At the outer end of the valve chamber 13 there is a suitable'closure 17 provided with a central bearingopening 18 for the sliding operating rod 19 for the valve 20. The valve 20 extends transversely of the valve chamber 13, and is rounded throughout the greater portion of the surface on a curve in cross section, which may be substantially circular,

making a semi cylindrical part of the valve.

The valve 1s preferably made of fireproof any adjusted position without the use of out-- side force to hold it there. The valve 20is so placed in the valve chamber 13 that when the projecting'portion 21 isturned to rest on the floor 15, it forms a projection in line therewith across the flue opening in 11. To make proper closing connection with the walls of the flue 11, the lining 12 is cut away at 22 on a curve from above, leaving a ledge against which the tip end of the valve strikes, and which serves as a stop for it. The valve 20 on the side opposite the provalvev a the point of the projection is atthe top of the valve chamber and at the wall of the flue, leaving an open passage for the gases. This substantial balance of the valve and its action in simply rolling on a smooth surface, makes its operation very easy and requires very little power.v

The automatic means for controlling the action of the valve as shown, consists of an outlet pipe 25 leading from the chamber 10 of the gas retort and terminating above the liquid in the float chamber 26. An arm 27 1s hinged at 28 and carries at one end the weight 29 which may be varied in accordance with the pressure or vacuum which it is desired to maintain. It is pivoted at its other end 30 to a rod 40 carried by the float, and is there connected to an arm 41 which is pivotally connected to the rotary mechanism 42, whereby a rise or fall of the float memher in the pressure device will turn the rotary member 42. This rotary member is in turn connected by link arm 43 to the end of the valve operating rod 19 so that the turning of 42 will roll the valve and cause it to open or close the flue in accordance with the direction of movement. It will be understood that where reference has been made to maintaining a definite pressure or vacuapparatus, reference was had "to pressures either above or below atmospheric. It will further be understood that the weights 29 are intended simply to counterbalance more or less the weight of the floating member of. the pressure or vacuum device which, of course, tends to move downwardly.

Havingthus described the invention what is claimed as new and desired to be secured by Letters Patent is:

1. A valve structure comprising a conduit having a passageway therethrough and a valve chamber extending laterally thererom, a rolling valve resting and rollin on the bottom of said valve chamber and aving a projection adapted to extend across and close said passageway when the valve is rolled to one end of its path of travel and to open said passageway when rolledin the other direction.

2. A valve structure comprising a conduit having a passageway therethrough and a valve chamber extending laterally therefrom, a substantially balanced rolling valve and at thispoint a pin or rod 24 may combination with a chamber valve is ."cally roll said valve roll on said floor and 'a projecting portion adapted to extend across said passageway in contact with the walls thereof to close. the same when said valve is rolled to proper position.

4. A valve comprising a semi-cylindrical valve chamber extending therefrom later-.

portion and a tangential projecting portion,

the material on the side including the projection being only such as will substantially balance that on the other side of the center of the semi-cylindrical portion whereby the valve will roll easily carrying the projection through a considerable arc and will unaided remain in adjusted position.

5. A pressure and vacuum control mechanism comprising a fluid conduit having a valve chamber extending laterally therefrom, a substantially balanced rolling valve resting and rolling on the bottom of said valve chamber and having a projection adapted to extend across and close said conduit when said valve is rolled to one end of its path of travel, means connected to said valve for rolling it and extending to the exterior of said valve chamber and automatic pressure or vacuum controlled means for operating said rolling means.

6. In a device of the class described the adapted to conpressure or vacuum, of an outlet flue lined with refractory material and having in-one side a transversely extending valve chamber lined with refractory material, a substantially balanced rolling valve of refractory material resting and rolling on the bottom of said valve chamber and having a projecting portion adapted to extend across and close said flue when the rolled to one end of its path of travel, pressure operated mechanism connected with said chamber, and means so connecting said valve with said pressure or vacuum operated mechanism as to autocatito open and close said flue by and in accordance with the pressure or vacuum in the chamber.

In a device of the class described the combination with a chamber adapted to contain hot gases under pressure or vacuum, of an outlet flue lined with refractory material and having in one side a transversely tain hot gases under extending valve chamber lined with refractory material, a valve formed of refractory material extending transversely of said valve chamber and resting on the bottom thereof rounded in the form of a continuous arc in cross section throughout the greater portion of its outer surface but having a tangential projection adapted to extend across and close said flue, the material of said valve being so distributed as to sub- 10 In testimony whereof I afiix my signature. 15

HERMAN BURGI. 

